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FRESH WATER BIOLOGY 



By HENRY B. WARD AND GEORGE C. WHIPPLE 



WITH THE COLL ABORATION OF 25 DISTINGUISHED SPECIALISTS 



All interested in aquatic biology will find here answers to their 

 queries on methods of study, conditions of existence, types of life, and 

 inter-relations of the organisms that inhabit our fresh-water bodies, 

 together with data on their life histories, habits and range. 



This work is the first complete and accurate record of North Amer- 

 ican aquatic life, especially the micro-organisms; among both plants 

 and animals excluding the vertebrates, higher plants and bacteria, 

 every form is described that has been reported from a fresh-water body 

 on this continent. 



A comprehensive general discussion of each group precedes the 

 description of individual forms, which are arranged under a key to 

 permit of rapid and accurate determination of the genera and species. 

 Nearly every form is illustrated, and its diagnostic features are pointed 

 out. Biological data on its habits, frequence and distribution are also 

 given. 



Fresh-Water Biology is a big book of 1111 pages, with 1547 illus- 

 trations. Price, $7.50 Postage Paid 



AQUATIC LIFE, 632 E. Girard Avenue, Philadelphia, Pa 



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=08 



Live Food is Nature's Food 



Give your fishes white worms, which can 

 be raised indoors throughout the year. 

 Generous portion, 60 cents, with full instruc- 

 tions for propagation. (Successor to C. E. 

 Jenne.) 



W. J. WRIGHT 



Bergen Avenue and Mercer Street, 

 Jersey City, N. J. 



Mesogonisteus chaetodon The 



Black-banded Sunfish. $6 and $12 

 per dozen. 



If you mean business, send check with order 

 GEORGE W. PRICE 



2145 South Lee Street, Philadelphia 



Wish to Purchase 



about six pairs each of Betta rubra. Haplochilus 

 cameronensis and Danio albolineatus. Will ex- 

 change for other tropical fishes. 



LOUIS MANNING, 



1500 St. Roch Ave., New Orleans, La. 



New Aquairum Fish 



Channa fasciata, from Southern Asia. Same 

 general shape as Climbing Perch, but hand- 

 somely marked with blotches of green, thickly 

 dotted with silver. Very unusual. Young ones, 

 about 2 inches, 4 for $10 



WM. T. INNES, 1824 N. Park Avenue, Philadelphia, Pa 



The 



Microscopy of Drinking 



Water 



By GEORGE CHANDLER WHIPPLE 



Professor of Sanitary Engineering in 

 Harvard University. A book having 

 a direct bearing .on the work of the 

 aquarist. Even without a microscope 

 it will enable him to comprehend the 

 factors controlling the character of 

 the water used in his tanks. It de- 

 scribes the methods of examination 

 assisting in the identification of com- 

 mon organisms found in city water, 

 and interprets the results. 



The third edition, rewritten and en- 

 larged, contains 409 pages, with 74 

 figures, f> full-page plates in the text, 

 and 19 plates giving 235 illustrations 

 of organisms in color. Price, post- 

 paid, $4.50. 



The Book Department 

 Aquatic Life 



